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ReadiUse™ CFSE
5-(and 6)-Carboxyfluorescein diacetate, succinimidyl ester; CAS 150347-59-4
It is widely recognized that fluorescent labeling of cells is an effective means to determine total cell numbers or how many viable cells exist in a sample. Flow cytometry combined with fluorescent staining is a powerful tool to analyze heterogeneous cell populations. Fluorescein diacetate (FDA) and its derivatives are non-fluorescent molecules that diffuse into cells and are hydrolyzed by intracellular non-specific esterases to give fluorescent products. The fluorescent products can be accumulated only in those cells that have intact cell membranes; therefore, dead cells with leaky membranes are not stained. The precise kinetics of membrane transport and intracellular hydrolysis of FDA and its analogs (such as CDCFDA) are related to cellular functions, thus FDA labeling can be used for monitoring cells by flow cytometry or fluorescence microscopy. The fluorescence intensity of labeled cells by FDA dyes varies considerably among cell lines and strains, probably because of differences in intracellular esterase activity. CFSE is an amine-reactive FDA derivative that is widely used for monitoring cell proliferation with a flow cytometer. AAT Bioquest offers this convenient package size for flow cytometric use. Each vial of CFSE may be reconstituted to a stock concentration of 10 mM with 90 uL of anhydrous DMSO. The DMSO stock solution should be protected from light and stored at -20°C with dessicant, avoiding freeze-thawing.
Chemical structure for ReadiUse™ CFSE [5-(and 6)-Carboxyfluorescein diacetate, succinimidyl ester] *CAS 150347-59-4*
Chemical structure for ReadiUse™ CFSE [5-(and 6)-Carboxyfluorescein diacetate, succinimidyl ester] *CAS 150347-59-4*
CatalogSize
Price
Quantity
220285x500 ug
Price
 
Physical properties

Molecular weight557.46
SolventDMSO
Spectral properties

Excitation (nm)498
Emission (nm)517
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12352200
CAS150347-59-4
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Page updated on September 30, 2024